Fossilized eggs of the largest known dinosaurs have been unearthed in an unexpected place

A trove of Titanosaur eggs unearthed in Argentina 

Dinosaur eggs are rare in the fossil record because the eggshell is relatively thin and fragile. - Darla Zelenitsky

A clutch of fossilized titanosaur eggs. - Darla Zelenitsky

Paleontologists also excavated dinosaur bones at the site Chorrillo Formation in southern Argentina. - Fernando Novas

Researchers discovered the 255 eggshell fragments in the Chorrillo Formation in southern Argentina. -A clutch of fossilized titanosaur eggs. - Darla Zelenitsky Fernando Novas

Most titanosaur eggs and eggshells, like those of other dinosaurs, have been found in lower-latitude regions closer to the equator, where warmer temperatures would have made incubating the eggs easier.

Scientists think these long-necked, small-brained, plant-eating giants — part of a group known as sauropods — lived in herds and may have migrated over long distances, nesting in the same place for millennia.

"Some of the very largest animals in Earth's history were laying eggs and hatching their babies at high latitudes in the Cretaceous, which is a new fact about dinosaur biology and behaviour that makes us better appreciate their adaptability and resiliency."

Paul Upchurch, a professor of paleobiology at University College London said that sauropod remains are rare at high latitudes and it had been thought that the giants moved to these areas during warm summers before returning closer to the equator.

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